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SDS Constructions
Sean Smithers
Our building services company SDS Constructions has been established for many years and have been providing customers in Dagenham and the surroundi...
From £51,880
Can design and Construction
Erald Kanani
Member since August 2025
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Render
Experienced extension builder ready to quote for your work. Render is the best extension builder in Ilford. No obligation free quotes and many happ...
Decorating Building Service
Decorating Building Service are here to help customers who need an Extension Builder in Ilford. We offer a competitive rate to complete all your ex...
Kunshi Services UK Ltd
Kunshi Services UK Ltd is a trusted extension builder serving customers in Ilford and the surrounding area. Contact us to today to get a competitiv...
From £52,176
Fedora and sons Ltd
MIHAI Martolea
Member since September 2026
Ilford, IG1
Fedora and sons Ltd is a trusted extension builder serving customers in Ilford and the surrounding area. Contact us to today to get a competitive q...
CC&D BUILDING LTD
Catalin CIOBANU
Experienced extension builder ready to quote for your work. CC&D BUILDING LTD is the best extension builder in Ilford. No obligation free quotes an...
RTC Plumbers
Shaik Jamal
Welcome to RTC Plumbers! With over 15 years of experience, we offer a range of plumbing services from simple repairs to complex installations, each...
ESK Builders
Need to find an Extension Builder near you for all your extension buildering work?
ESK Builders provides a local, trusted extension builder...
MD Building & Project Management Ltd
Need an Extension Builder in Ilford? MD Building & Project Management Ltd has been helping local clients (10 mile radius) with their extension buil...
Mansard loft conversion cost in Ilford
Mansard loft conversions range from the cheapest installation of £51,416 (RTC Plumbers based in RM6) to the dearest of around £52,712 (Render based in IG1).
While these estimates give you a good idea how much you'll pay for a mansard loft conversion, the only way to get an accurate price is to get real quotes from real builders.
Get quotes to install a mansard loft conversion in Ilford by posting a job with HaMuch and we'll send it to extension builders in Ilford.
- How much does a mansard loft conversion cost?
- What is a mansard loft conversion?
- Factors that affect the cost of a mansard loft conversion
- Additional costs to consider with a mansard loft conversion
- How long does a mansard loft conversion take?
- Do I need planning permission for a mansard roof?
- What is the difference between a dormer and a mansard?
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Estimates for common extension builder jobs in Ilford;
Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.
Underpin a building - £17,674
Two storey extension - £88,262
Build a timber frame extension - £26,174
Build a swimming pool - £81,174
Single storey extension - £58,488
Side return extension - £43,462
Install an RSJ - £2,374
Outbuilding - £10,174
Build a Mansard loft conversion - £52,174
Loft conversion - £35,385
Build a kitchen extension - £42,174
Hip to gable loft conversion - £42,174
Granny annexe - £87,174
Garden office - £10,174
Convert a Garage - £16,174
Garage - £18,674
Build a flat roof extension - £22,174
Build a dormer loft conversion - £42,174
Concrete foundations - £6,424
Convert a bungalow loft - £29,174
Convert a basement - £39,462